atlisgeo.

Photogrammetry
.............. the new Point Cloud
ATLISGEO.COM
At-A-Glance
Headquarters:
Winnipeg, MB CANADA
Began Operations:
1995
Operation Facilities:
Winnipeg, MB
Calgary, AB
Airborne Sensors:
2 Optech Digital Stereo Image Sensors
Trimble Gatewing UAV
DigitalGlobe / GeoEye Satellite Sensors (partner)
LiDAR Sensors (partner)
ATLISGEO.COM
At-A-Glance
• Acquired first digital camera in 2008, sub-contracted analog photo 1995 – 2007
• In 2010 became central Canada’s only authorized reseller of DigitalGlobe products
• Just launched ATLIS VUE, an online ordering system for geo-spatial products
ATLISGEO.COM
What We Do
• Aerial Survey Photography
• Orthophoto
• LiDAR Acquisition & Processing
• DEM / Contour Mapping
• Satellite Imaging & Processing
• Other Surface Feature Mapping
ATLISGEO.COM
Products
Orthophotos
Land Use Maps
ATLISGEO.COM
DEM/DSM/DTM
3D City Models
Contour Maps
Flood Models
Industry Solutions
ATLIS is a leading solution provider of quality mapping services to
government and business in...
• Mining & Exploration
• Public Works & Transportation
• Engineering & Construction
• Telecommunications
• Energy, Oil & Gas
• Forestry & Natural Resources
• Electric Utilities
• Real Estate & Development
ATLISGEO.COM
Image
ImageAcquisition
Acquisition
Medium & Wide Format Aerial Imaging
Image GSD of 5cm to 100cm
RGB and/or NCIR
ATLISGEO.COM
Image Acquisition
Acquisition
Image
UAVAerial Imaging
Image GSD of 5cm and better
ATLISGEO.COM
Satellite Imaging
Image GSD of 50cm & greater
Image Acquisition
Acquisition
Image
Optech Digital Camera with FMC
ATLISGEO.COM
Terrain Measurement
Technology
Photogrammetry
Accurate to +/- 10cm
Automated process reducing costs
Cost effective for smaller sites
Cost effective if Imagery Exists
LiDAR
Accurate to +/- 8cm
Great for dense vegetative areas
More cost effective for large areas if
new acquisition necessary
ATLISGEO.COM
Terrain Measurement
Technology
IFSAR (airborne radar)
Accurate to +/- 100cm
Cost effective for very large areas
Less restricted by weather
Ground Survey
Best Measurement Accuracy
Costly for large areas
Restricted by terrain access
ATLISGEO.COM
Terrain Measurement
Technology (historical)
Analytical Photogrammetry
ATLISGEO.COM
Softcopy Photogrammetry
Terrain Measurement
Technology (historical)
Photogrammetry
ATLISGEO.COM
LiDAR
Terrain Measurement
Technology (historical)
Photogrammetry
ATLISGEO.COM
LiDAR
Terrain Measurement
Technology (historical)
Photogrammetry
Orthophotos became more popular
Manual DEM Process Costly
LiDAR
More systems in use
Reduced prices
Better computer hardware &
software for end users improved
popularity & usability
ATLISGEO.COM
Photogrammetry
Advancements
Software (complex algorithms)
Hardware (CPU, Memory, Graphics & Storage)
Digital Aerial Survey Cameras
ATLISGEO.COM
Photogrammetry
Digital Aerial Survey Camera
Direct Digital Image (no film processing & no scanning)
Improved (16bit) Radiometry
Improved Forward Overlap
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Radiometry
8 Bit
ATLISGEO.COM
16 Bit
Photogrammetric
DEM & Point Clouds
Photo-Correlated Digital Surface Models
(Pixel Correlation)
• Mathematical modeling algorithms produce point
clouds of the "first reflective" surface of images
• Allow high density point clouds to be rapidly
extracted from overlapping aerial images.
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Software
INPHO Match-AT
• for triangulation and creation of
geo-referenced spatial stereo
models
• automatic tie point matching is
done on image areas contributing
best to the strength and quality
of the block.
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Automatic Tie Point Selection for Triangulation
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Software
INPHO MATCH-T DSM
• Automatic digital
terrain model extraction
is done through
extremely dense
feature-based matching
techniques,
guaranteeing reliable
and accurate results.
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Accuracy Results of Ground Survey
PT#
100
107
104
105
102
103
ATLISGEO.COM
SURVEY
268.088
255.198
264.138
265.083
267.974
267.921
PT/CLOUD
268.24(avg)
255.275(avg)
264.160(avg)
265.154(avg)
268.03(avg)
267.954(avg)
VARIANCE
Delta - 0.152
Delta – 0.077
Delta – 0.022
Delta – 0.071
Delta - 0.056
Delta – 0.033
Photogrammetric
DEM & Point Clouds
Souris River Photogrammetric DSM
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Sample Point Cloud Project
Hwy 75 South
Area = .2068 km²
Source Imagery = 5.5cm GSD
Point Count = 4,406,979
Approx. 25 pts / m²
Full Feature Classification
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Sample Point Cloud Project – Hwy 75 South
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Sample Point Cloud Project
Forest on Red River, Selkirk
Area = 1 km²
Source Imagery = 10cm GSD
Point Count = 2,510,352
Approx. 5 - 6 pts / m²
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Sample Point Cloud Project
Forest on Red River, Selkirk
Area = 1 km²
Source Imagery = 10cm GSD
Point Count = 2,510,352
Approx. 5 - 6 pts / m²
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Sample Point Cloud Project - Forest on Red River, Selkirk, MB
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Summary
In a world that is seeing 3D capture technologies growing at a rapid rate, it is important
to remember that there is a time and place for every technology and that sometimes the
newest technology doesn’t necessarily provide the best fit for every problem. Moreover,
sometimes the best fit for a project comes from blending multiple innovations into one
solution, thereby addressing the widest array of possible use cases. In this way, you
might even say photogrammetry is the new point cloud.
LiDAR News
ATLISGEO.COM
Photogrammetric
DEM & Point Clouds
Summary
• If highly accurate ground data is required, as well as forest canopy is then LiDAR would
be the better technology to use.
• However, Phototgrammetric Point Cloud technology is very cost effective when :
 Ground terrain information already exits
 Existing stereo imagery already exists
ATLISGEO.COM
Questions?
ATLISGEO.COM